package net.homeftp.heimo.camera;

import java.io.IOException;

import android.content.Context;
import android.hardware.Camera;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Toast;

/** A basic Camera preview class */
public class CameraPreview extends SurfaceView implements
		SurfaceHolder.Callback, Camera.PreviewCallback {
	private final String TAG = "CameraPreview";
	private SurfaceHolder mHolder;
	private Camera mCamera;
	private Context context;
	private DrawView dv;

	public CameraPreview(Context context, Camera camera, DrawView dv) {
		super(context);
		this.mCamera = camera;
		this.context = context;
		this.dv = dv;

		// Install a SurfaceHolder.Callback so we get notified when the
		// underlying surface is created and destroyed.
		mHolder = getHolder();
		mHolder.addCallback(this);
		// deprecated setting, but required on Android versions prior to 3.0
		mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

		fnSetOnTouchListener();
	}

	public void surfaceCreated(SurfaceHolder holder) {
		// The Surface has been created, now tell the camera where to draw the
		// preview.
		try {
			mCamera.setPreviewDisplay(holder);
			mCamera.startPreview();
			mCamera.setPreviewCallback(this);
		} catch (IOException e) {
			Log.d(TAG, "Error setting camera preview: " + e.getMessage());
		}
	}

	public void surfaceDestroyed(SurfaceHolder holder) {
		// empty. Take care of releasing the Camera preview in your activity.
	}

	public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
		// If your preview can change or rotate, take care of those events here.
		// Make sure to stop the preview before resizing or reformatting it.

		if (mHolder.getSurface() == null) {
			// preview surface does not exist
			return;
		}

		// stop preview before making changes
		try {
			mCamera.stopPreview();
		} catch (Exception e) {
			// ignore: tried to stop a non-existent preview
		}

		// set preview size and make any resize, rotate or
		// reformatting changes here

		// start preview with new settings
		try {
			mCamera.setPreviewDisplay(mHolder);
			mCamera.startPreview();

		} catch (Exception e) {
			Log.d(TAG, "Error starting camera preview: " + e.getMessage());
		}
	}

	public void fnSetOnTouchListener() {
		OnTouchListener l = new OnTouchListener() {
			@Override
			public boolean onTouch(View v, MotionEvent event) {
				int action = event.getAction();

				switch (action) {

				case MotionEvent.ACTION_DOWN:
					Toast.makeText(context, "a", Toast.LENGTH_SHORT).show();
					break;
				default:
					return false;
				}
				return false;
			}
		};
		this.setOnTouchListener(l);
	}

	@Override
	public void onPreviewFrame(byte[] data, Camera camera) {
		if (data != null && dv != null) {
			Camera.Parameters params = camera.getParameters();
			int mImageWidth = params.getPreviewSize().width;
			int mImageHeight = params.getPreviewSize().height;
			int[] mRGBData = new int[mImageWidth * mImageHeight]; 
			byte[] mYUVData = new byte[data.length];
			  
			int color = ColorHelper.decodeColorFromPt(mYUVData,mImageWidth,mImageHeight, dv.midX,dv.midY);
			Log.i(TAG, "Display Color : "+color);
			dv.setDisplayColor(color);
			dv.invalidate();

		}
	}
}